01: /* Copyright (C) 2004 - 2007 db4objects Inc. http://www.db4o.com
02:
03: This file is part of the db4o open source object database.
04:
05: db4o is free software; you can redistribute it and/or modify it under
06: the terms of version 2 of the GNU General Public License as published
07: by the Free Software Foundation and as clarified by db4objects' GPL
08: interpretation policy, available at
09: http://www.db4o.com/about/company/legalpolicies/gplinterpretation/
10: Alternatively you can write to db4objects, Inc., 1900 S Norfolk Street,
11: Suite 350, San Mateo, CA 94403, USA.
12:
13: db4o is distributed in the hope that it will be useful, but WITHOUT ANY
14: WARRANTY; without even the implied warranty of MERCHANTABILITY or
15: FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16: for more details.
17:
18: You should have received a copy of the GNU General Public License along
19: with this program; if not, write to the Free Software Foundation, Inc.,
20: 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
21: package com.db4o.internal.cs.messages;
22:
23: import com.db4o.*;
24: import com.db4o.internal.*;
25:
26: public final class MReadMultipleObjects extends MsgD implements
27: ServerSideMessage {
28:
29: public final boolean processAtServer() {
30: int size = readInt();
31: MsgD[] ret = new MsgD[size];
32: int length = (1 + size) * Const4.INT_LENGTH;
33: synchronized (streamLock()) {
34: for (int i = 0; i < size; i++) {
35: int id = this ._payLoad.readInt();
36: try {
37: StatefulBuffer bytes = stream().readWriterByID(
38: transaction(), id);
39: if (bytes != null) {
40: ret[i] = Msg.OBJECT_TO_CLIENT.getWriter(bytes);
41: length += ret[i]._payLoad.length();
42: }
43: } catch (Exception e) {
44: if (Debug.atHome) {
45: e.printStackTrace();
46: }
47: }
48: }
49: }
50:
51: MsgD multibytes = Msg.READ_MULTIPLE_OBJECTS.getWriterForLength(
52: transaction(), length);
53: multibytes.writeInt(size);
54: for (int i = 0; i < size; i++) {
55: if (ret[i] == null) {
56: multibytes.writeInt(0);
57: } else {
58: multibytes.writeInt(ret[i]._payLoad.length());
59: multibytes._payLoad.append(ret[i]._payLoad._buffer);
60: }
61: }
62: write(multibytes);
63: return true;
64: }
65: }
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